Transactional Key-Value Store Kotlin Playground

Features:

DB Console
- additional commands (help, reset, etc.)
DB view.
undo/redo.
change log.
settings (lang, theme, implementation, analytics on/off).
app info, policies, and 3rd party licenses.
ads.
- ads disabling subscription for apps?
- authorization for subscription (all kinds of authorization including web3)

Interfaces:

CLI

(interactive, signals handling, colored output)

jvm
GraalVM + UPX compression
jvm-cli-compose (mosaic)
js-node
wasm-wasi
kotlin-native

Application

Android (Compose, Views, Fragments)
iOS (SwiftUI, Compose, Compose Cupertino)
Desktop for all OSes (Win, Linux, Mac)
- Compose
- Swing
- JavaFX
- AWT
- SWT
- SnapKit
- lanterna
- Apache Pivot
- GTK [2]
- ImGui
- Flutter UI?
- ReactNative UI?

Web SPA

Compose JS
Compose WASM
TeaVM
JS frameworks from Kotlin and vice versa
- React
- Preact
- Reatom
- Vue
- Angular
- Solid
- Svelte
- Ember
- Inferno
- Mithril
- Aurelia
- Backbone
- jQuery
- vanilla JS/TS
- etc.

Implementations

switchable different implementations
- Copy-on-Write with Snapshots
  - Initially, all transactions point to the same data map. On modification, a copy of the modified part is made.
- platform-specific like:
  - Room-based
  - SQLDelight
some info for each implementation in the apps

Architecture perfection

Layers & feature splits (clean arch, etc.)
Decompose navigation.
FluxoMVI vs. other MVI libs (switchable?)
Kotlin-inject for DI.
Debug-console
- time-travel
- coroutines/jobs monitoring
- tracking events
- etc.
Own hosted deep user analytics.
App protection and anti-tampering techniques.
Cross-platform ads with own ads.
Paid app-subscriptions and one time payment.
Authorization to distinguish persistent stores and app-subscriptions.
...

Build & CI/CD pipeline perfection

code quality with git hooks.
shrinking, minification, optimization.
- Double (R8 + ProGuard) when possible.
all types of auto-tests.
- including final package testing.
publication of releases everywhere
- F-Droid
- GitHub repos.
...